Automatic oiling and low liquid level alarm device for hydraulic station of elevator
By designing an automatic refueling and low-level alarm device, the equipment wear and safety hazards caused by the traditional hydraulic station refueling method relying on manual labor is solved, and the automatic oil level monitoring and refueling of the hydraulic station is realized, improving the operating stability and production efficiency of the equipment.
Patent Information
- Application Number
- CN202510079036.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-02-28
AI Technical Summary
Traditional hydraulic station refueling methods rely on manual inspection, which poses the risk of equipment wear or failure and shutdown due to untimely refueling. It is difficult to detect low oil levels in a timely manner, which seriously threatens the safe operation of the hoist.
Design a hydraulic station automatic refueling and low-level alarm device for lifting machine, including hydraulic station oil tank, centralized gas station, transparent oil window and liquid level sensor, which is electrically connected to the oil pump and alarm through the controller to realize automatic refueling and low-level alarm functions.
Ensure that the hydraulic station always maintains the appropriate oil level, avoid wear and downtime caused by insufficient oil, improve the service life and overall utilization of the equipment, reduce labor costs and equipment downtime, and improve production efficiency and safety.
Smart Images
Figure CN119532280A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of hydraulic stations, and in particular to an automatic refueling and low liquid level alarm device for a hoist hydraulic station. Background Art
[0002] Coal mine hoists are responsible for lifting personnel and materials in the mine. They are the hub connecting the production systems above and below the mine. They are often called the throat of mine production and occupy an extremely important position in mining equipment. For hoists, the safety and reliability of operation directly affect the safe production and economic benefits of coal mines. As an indispensable and important part of hoists, the stable operation of hydraulic stations is crucial to production safety and efficiency.
[0003] In the related technology, the traditional hydraulic station refueling method relies on manual inspection and manual operation, and there is a risk of equipment wear or even shutdown due to untimely refueling. At the same time, when the oil pipe leaks or the oil level suddenly drops too quickly, if it is not discovered in time, the hoist cannot operate safely, which seriously threatens the safety of the auxiliary shaft hoisting and poses a serious safety hazard. Summary of the invention
[0004] The purpose of the present disclosure is to provide an automatic refueling and low liquid level alarm device for a hoist hydraulic station, which can at least partially solve the problems existing in the related art.
[0005] In order to achieve the above-mentioned purpose, the present disclosure provides an automatic refueling and low liquid level alarm device for a hoist hydraulic station, comprising a hydraulic station oil tank and a centralized refueling station, wherein an oil pump is provided at the centralized refueling station, and the oil pump is connected to the hydraulic station oil tank through a pipeline, and a transparent oil window is provided on one side of the hydraulic station oil tank, and a first liquid level sensor and a second liquid level sensor are installed on the transparent oil window, wherein the first liquid level sensor is placed above the second liquid level sensor, and the automatic refueling and low liquid level alarm device for the hoist hydraulic station also includes a controller, and the controller is electrically connected to the first liquid level sensor, the second liquid level sensor and the oil pump, respectively.
[0006] Optionally, a third liquid level sensor is further installed on the transparent oil window, the automatic refueling and low liquid level alarm device of the hoist hydraulic station also includes an alarm, and the controller is electrically connected to the third liquid level sensor and the alarm respectively.
[0007] Optionally, the third liquid level sensor is placed below the second liquid level sensor.
[0008] Optionally, the third liquid level sensor is flush with the second liquid level sensor in a horizontal direction.
[0009] Optionally, the alarm includes a speaker and / or an indicator light.
[0010] Optionally, the third liquid level sensor is an ultrasonic liquid level transmitter.
[0011] Optionally, both the first liquid level sensor and the second liquid level sensor are ultrasonic liquid level transmitters.
[0012] Optionally, the transparent oil window is made of acrylic.
[0013] Optionally, the controller comprises a relay.
[0014] Optionally, the controller further comprises a contactor electrically connected to the relay.
[0015] Through the above technical scheme, the automatic refueling function of the device can ensure that the hydraulic station always maintains the appropriate oil level, avoiding wear caused by poor lubrication of hydraulic components due to insufficient oil. For example, key components such as hydraulic pumps and hydraulic valves can work normally when there is sufficient oil, extending the service life and reducing equipment maintenance costs. Since the oil can be automatically replenished, the hydraulic station of the hoist can operate continuously and stably, reducing the number of shutdowns caused by low oil levels. In continuous production operation scenarios, it can effectively increase the working time of the hoist, improve the overall utilization rate of the equipment, and thus improve production efficiency. The device can accurately control the amount of refueling according to pre-set parameters to avoid over- or under-refueling, which not only ensures the normal operation of the hydraulic station, but also prevents oil waste and improves resource utilization efficiency. The device has a simple structure, is easy to operate, has stable quality, high efficiency, and reduces labor.
[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings: Figure 1 It is a structural schematic diagram of an automatic refueling and low liquid level alarm device for a hoist hydraulic station provided in an exemplary embodiment of the present disclosure.
[0018] Description of Reference Numerals 1-hydraulic station oil tank; 11-transparent oil window; 12-first liquid level sensor; 13-second liquid level sensor; 14-third liquid level sensor; 2-centralized gas station; 21-oil pump; 3-controller; 4-alarm DETAILED DESCRIPTION Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.
[0019] In the present disclosure, unless otherwise stated, the directional terms "upper", "lower", "top", and "bottom" are defined based on the directions in which the relevant components are actually used. "Inside" and "outside" refer to the contours of the corresponding components themselves. The terms "first", "second", etc. are used to distinguish different components and do not have order or importance. In the present disclosure, when the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.
[0020] In the related technology, the traditional hydraulic station refueling method relies on manual inspection and manual operation, which has the risk of equipment wear and even failure and shutdown due to untimely refueling, and low oil level is difficult to detect in time.
[0021] In view of this, refer to Figure 1 The embodiment of the present disclosure provides an automatic refueling and low liquid level alarm device for a hoist hydraulic station. The automatic refueling and low liquid level alarm device for a hoist hydraulic station may include a hydraulic station oil tank 1 and a centralized refueling station 2. An oil pump 21 is provided at the centralized refueling station 2. The oil pump 21 is connected to the hydraulic station oil tank 1 through a pipeline. A transparent oil window 11 is provided on one side of the hydraulic station oil tank 1. A first liquid level sensor 12 and a second liquid level sensor 13 are installed on the transparent oil window 11, wherein the first liquid level sensor 12 is placed above the second liquid level sensor 13. The automatic refueling and low liquid level alarm device for a hoist hydraulic station may also include a controller 3, which is electrically connected to the first liquid level sensor 12, the second liquid level sensor 13 and the oil pump 21 respectively. When the second liquid level sensor 13 detects that the liquid level of the hydraulic station oil tank 1 drops to the height of the second liquid level sensor 13, the controller 3 controls the oil pump 21 of the centralized gas station 2 to start, and the centralized gas station 2 automatically replenishes oil to the hydraulic station oil tank 1; when the first liquid level sensor 12 detects that the liquid level of the hydraulic station oil tank 1 reaches the height of the first liquid level sensor 12, the controller 3 controls the oil pump 21 of the centralized gas station 2 to shut down and stop replenishing oil to the hydraulic station oil tank 1. The device operates stably, and the error of the refueling amount can be controlled within ±1L, which improves the maintenance efficiency of the hydraulic station, reduces labor costs and equipment downtime, and brings significant economic and safety benefits to the enterprise.
[0022] Through the above technical scheme, the automatic refueling function of the device can ensure that the hydraulic station always maintains the appropriate oil level, avoiding wear caused by poor lubrication of hydraulic components due to insufficient oil. For example, key components such as hydraulic pumps and hydraulic valves can work normally when there is sufficient oil, extending the service life and reducing equipment maintenance costs. Since the oil can be automatically replenished, the hydraulic station of the hoist can operate continuously and stably, reducing the number of shutdowns caused by low oil levels. In continuous production operation scenarios, it can effectively increase the working time of the hoist, improve the overall utilization rate of the equipment, and thus improve production efficiency. The device can accurately control the amount of refueling according to pre-set parameters to avoid over- or under-refueling, which not only ensures the normal operation of the hydraulic station, but also prevents oil waste and improves resource utilization efficiency. The device has a simple structure, is easy to operate, has stable quality, high efficiency, and reduces labor.
[0023] In some embodiments, reference Figure 1 , a third liquid level sensor 14 can also be installed on the transparent oil window 11, and the automatic refueling and low liquid level alarm device of the hoist hydraulic station can also include an alarm 4, and the controller 3 is electrically connected to the third liquid level sensor 14 and the alarm 4 respectively. The alarm response time of the alarm 4 can be shortened to within 1s, effectively avoiding equipment failure and shutdown due to low oil level. When the third liquid level sensor 14 detects that the liquid level of the hydraulic station oil tank 1 is reduced to the height of the third liquid level sensor 14, the controller 3 controls the alarm 4 to sound an alarm. The device can sound an alarm in time when the oil level drops to a critical value, reminding the staff to check the hydraulic station, which helps to timely discover possible leakage points or other hidden faults, such as oil pipe rupture, seal damage, etc., so that corresponding measures can be taken to repair and prevent the problem from further deteriorating. Low oil level may cause hydraulic station failure, such as abnormal hydraulic system pressure, excessive oil temperature, etc. These failures may cause serious safety accidents such as loss of control of the hoist. The device can detect and notify the staff in time, so that potential safety hazards can be discovered and handled at an early stage, effectively reducing safety risks. The device successfully realizes the automatic monitoring and automatic refueling functions of the hydraulic station oil level, and the oil level control accuracy reaches ±2mm.
[0024] Further, refer to Figure 1 , the third liquid level sensor 14 can be placed below the second liquid level sensor 13. If the oil pump 21 at the centralized gas station 2 fails to refuel the hydraulic station oil tank 1 in time due to a malfunction, causing the oil level in the oil tank to drop to the height of the third liquid level sensor 14, at this time, the controller 3 controls the alarm 4 to sound an alarm to remind the staff to refuel in time or shut down for maintenance.
[0025] Further, the third liquid level sensor 14 can be flush with the second liquid level sensor 13 in the horizontal direction. In this way, an alarm can be issued while the oil is being replenished, so that the staff can understand the oil level and the oil replenishment situation in time.
[0026] The alarm device 4 may include a speaker and an indicator light, or one of the speaker and the indicator light. Since the staff may not notice the indicator light immediately, the device may issue a sound alarm through the speaker. In this way, there is no need to manually observe the oil level in the oil tank regularly, and a low oil level alarm can be issued in time to avoid safety accidents.
[0027] Specifically, the third liquid level sensor 14 may be an ultrasonic liquid level transmitter. The ultrasonic liquid level transmitter determines the liquid level by emitting high-frequency sound waves and calculating the time required for the sound waves to be reflected back to the sensor. It has no moving parts, a compact and reliable structure, is not affected by the properties of the medium, and is suitable for non-contact measurement of high-viscosity liquids and bulk solid materials.
[0028] Similarly, the first liquid level sensor 12 and the second liquid level sensor 13 can both be ultrasonic liquid level transmitters, and their advantages are the same as those of the third liquid level sensor 14, which will not be described in detail here.
[0029] The transparent oil window 11 may be made of acrylic, which has good transparency, chemical stability, weather resistance, and is easy to process. The transparent oil window 11 may also be made of transparent materials such as glass and polypropylene, which facilitates observation of the oil level.
[0030] In some embodiments, the controller 3 may include a relay. The relay is an automatic switching element with an isolation function and is an important control element.
[0031] Furthermore, the controller 3 may also include a contactor electrically connected to the relay. The contactor is a device that can quickly cut off the AC and DC main circuits and can frequently connect and disconnect the high-current control circuit, and is a high-power switching device.
[0032] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.
[0033] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.
[0034] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.
Claims
1. An automatic refueling and low liquid level alarm device for a hoist hydraulic station, characterized in that: It includes a hydraulic station oil tank and a centralized gas station, wherein an oil pump is provided at the centralized gas station, and the oil pump is connected to the hydraulic station oil tank through a pipeline, a transparent oil window is provided on one side of the hydraulic station oil tank, and a first liquid level sensor and a second liquid level sensor are installed on the transparent oil window, wherein the first liquid level sensor is placed above the second liquid level sensor, and the automatic refueling and low liquid level alarm device of the hoist hydraulic station also includes a controller, and the controller is electrically connected to the first liquid level sensor, the second liquid level sensor and the oil pump respectively.
2. The automatic refueling and low liquid level alarm device for the hoist hydraulic station according to claim 1 is characterized in that: A third liquid level sensor is also installed on the transparent oil window, and the automatic refueling and low liquid level alarm device of the hoist hydraulic station also includes an alarm. The controller is electrically connected to the third liquid level sensor and the alarm respectively.
3. The automatic refueling and low liquid level alarm device for the hoist hydraulic station according to claim 2 is characterized in that: The third liquid level sensor is placed below the second liquid level sensor.
4. The automatic refueling and low liquid level alarm device for a hoist hydraulic station according to claim 2 is characterized in that: The third liquid level sensor is flush with the second liquid level sensor in a horizontal direction.
5. The automatic refueling and low liquid level alarm device for a hoist hydraulic station according to claim 2 is characterized in that: The alarm includes a speaker and / or an indicator light.
6. The automatic refueling and low liquid level alarm device for a hoist hydraulic station according to claim 2, characterized in that: The third liquid level sensor is an ultrasonic liquid level transmitter.
7. The automatic refueling and low liquid level alarm device for a hoist hydraulic station according to claim 1 is characterized in that: The first liquid level sensor and the second liquid level sensor are both ultrasonic liquid level transmitters.
8. The automatic refueling and low liquid level alarm device for a hoist hydraulic station according to claim 1 is characterized in that: The transparent oil window is made of acrylic.
9. The automatic refueling and low liquid level alarm device for a hoist hydraulic station according to claim 1, characterized in that: The controller includes a relay.
10. The automatic refueling and low liquid level alarm device for a hoist hydraulic station according to claim 9, characterized in that: The controller also includes a contactor electrically connected to the relay.